I am amazed at how many nails and screws litter our highways; when I was young screws and nails were relatively expensive and money was tight, you didn’t scatter them around like nowadays. People obviously have too much money if they can afford to waste materials as they do, nothing more annoying than getting a puncture that wrecks your tyre. I collected my car after a bodywork repair, not my fault guv, and when I got home realised that one tyre had a puncture, when the offending item was removed by a tyre fitter it turned out to be a bodywork fastening which had obviously got into the tyre at the repairers, so annoying , cost a new tyre not recoverable with vulcanised repair.
Dave W